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Photoconductive Properties of MEH-PPV/CuS-Nanoparticle Composites |
| JIN Hui;HOU Yan-Bing;TANG Ai-Wei;MENG Xian-Guo;TENG Feng |
| Key Lab of Materials for Information Storage and Display (Ministry of Railway), Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044 |
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| Cite this article: |
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JIN Hui, HOU Yan-Bing, TANG Ai-Wei et al 2006 Chin. Phys. Lett. 23 693-696 |
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Abstract Photoconductive properties of photodiodes based on composites of CuS nanoparticles and Poly[2-methoxy,5-(2’-ethylhexyloxy)-p-phenylenevinylene] (MEH-PPV) are investigated. By comparing composite devices with different MEH-PPV:CuS weight ratios of 1:1 (D2-1), 1:1.25 (D2-2), 1:2.5 (D2-3) and 1:5 (D2-4), it is found that the device D2-3 exhibited the best performance: the short-circuit current density of 17μA/cm2 with the light intensity of 16.7 mW/cm2, the highest open-circuit voltage of 0.83V, and the photosensitivity of 132 at reverse bias of -1 V. The photosensitivity is improved by a factor of 5 compared with the undoped MEH-PPV device.
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| Keywords:
72.40.+w
72.80.Le
79.60.Jv
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Published: 01 March 2006
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| PACS: |
72.40.+w
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(Photoconduction and photovoltaic effects)
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72.80.Le
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(Polymers; organic compounds (including organic semiconductors))
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79.60.Jv
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(Interfaces; heterostructures; nanostructures)
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